List Of Messages
73
POWER SUPPLY HOT
The printer has sensor
circuits that sample the
operating temperature of key
components of the power
supply. When higher than
normal temperatures are
sensed, print speed is
automatically reduced. If the
printer runs at reduced
speed for an extended
period of time, the POWER
SUPPLY HOT message is
sent to the LCD and printing
stops, allowing printer
components to cool down.
Pressing the CLEAR key
resumes the print task.
Check the operating
environment. A severe
environment is one with an
ambient temperature at or
above 40° Celsius (104°
Fahrenheit) or is dirty
enough to create blockage
of the cabinet fan vents. The
printer must never be run at
ambient temperatures
greater than 40° Celsius
(104° Fahrenheit). If the
printer is located in such an
environment, relocate it to a
cooler, cleaner area.
1. Inspect printer environment for
severity. Advise the user to move
the printer to cooler, cleaner
location.
2. Check the kinds of print jobs the
user is running: look for very
dense graphics and layouts.
Advise the user to run jobs in
smaller batches.
3. Power off the printer. Remove the
paper path or pedestal top cover.
Check that the power supply
guard/air deflector is correctly
positioned over the power supply
board. WARNING:
DO NOT
TOUCH THE POWER SUPPLY,
but hold your hand close enough
to check for heat radiating off the
power supply board. If the power
supply is noticeably hot, replace
it.
4. Check that all fan cables are
connected.
5. Inspect vents and fan airways for
obstructions. Look underneath
cabinet models for items blocking
the cabinet exhaust vents.
6. Install paper path or pedestal top
cover. Load paper. Power on the
printer. Run the “All E’s” print test
for 5-10 minutes. If the message
appears, replace the controller
board. Record the message and
return it with defective board.
Table 2. Message List
Message Explanation Solution
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